If you do, you better build coffins along with them.
5 seconds sound clip from the The Westerner (1940) movie soundboard.
You can hear this line at 00:52:00 in the DVD version of the movie.
Quote context
[...]
- You spoiled the land, then you came here to spoil this land.
- Yea, but it ain't big enough for cattlemen and homesteaders, and it never will be.
- Now, clear out here. That's my ruling.
- All right, Bean, we're going. We're going back to build our fences.
- If you do, you better build coffins along with them.
- You sure told them off, son.
- Yep, and now I'm going to tell you off.
- I'm sorry I stopped them from lynching you.
- They got a right to defend their homesteads.
[...]